Signments



(No Model.) 2 sheets-sheet 1.

G. IVLBALL. WIRE TWISTING- MACHINE.

No. 443,491. Patented Deo. 30, 1890.

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Gr. M. BALL.

WIRE TWISTING MACHINE.

No. 443,491. Patented Dec. 30, 1890.

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@51j Stimm/w56. wm SMM W UNITED STATES PATENT OFFICE.

GEORGE M BALL, OF BROOKLYN, ASSIGNOR, BY DIRECT AND MESNE AS- SIGNMENTS, TO JAMES B. ATHERTON, LOUIS D. BECK, AND ANTHONY DEY, ALL OE NEV YORK, N. Y.

WIRE-TWISTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 443,491, dated December 30, 1890'.

Application filed October 31, 1889. Serial No. 328,739. (No model.)

T a/ZZ whom it may concern:

Be it known that I, GEGRGE M. BALL, a citizen of the United States, residing in Brooklyn, county of Kings, and State of New York,

have invented certain new anduseful Improvements in lire-Twisting Machines, of which the following is a specification.

The object of my invention is to provide a machine for rapidly twisting a pair of elecio trical conductors that have been covered with insulation in suoli manner that the twisted wires will not kink and that there will be practically the same length of wire in eachl strand. The ordinary arrangement heretofore employed, in which bobbins carrying the wires to be twisted are mounted upon a common revolving frame, is necessarily slow, and the results are not altogether satisfactory.

In my improved machine one wire is drawn zo from abobloin inclosed by ailier or revolving frame, while the other is applied spirally around it from the revolving flier, which latter is of peculiar construction. As the two wires leave this part of the apparatus one is longer than the other, and in order to insure a uniform mutual twist of both wires so that they shall both be of the same length I pass the wires over stretching-drums, the operation of which upon the wires is such as to 3o equalize them in length and twist, the additional length of wire for this purpose being drawn from its bobbin by the draft of the drums and the strain of the other wire.

My invention consists in the improved com- 3 5 bination of devices set forth in the claims.

In the accompanying drawings, Figure lis a side elevation, partly in section, of a machine embodying my invention; Fig. 2, an end elevation thereof; Fig. 3, a` plan view partly 4o broken away and`with some of the parts omitted. Fig. 4 is a detail view showing the bobbin in elevation and the bobbin-carryin g frame and Hier in section.

A B C D are the frame-standards.

In the standards B and C a revolving frame or fiier E, whose trunnions e e are hollow, is journaled. This frame is preferably of pear shape, as shown, and one side of it is hollow, and the bore thereof communicates with the hollow tru unionse e'. The pulley E is mount- 5o ed upon the hollow trunnion or shaft e', and power may be applied to the pulley by a suitable belt to revolve the frame E. l/Vithin the frame E a yoke G is pivoted upon trunnions g g', one of which g is hollow and coincides 55 with the bore of the trunnion or shaft e. The bobbin-carrying frame Gr is balanced on its trunnions and is free to adjust itself thereon. Within the frame G a bobbin H of wire may be removably mounted, and the wire there- 6o from passes directly through trunnion g and the hollow shaft or trunnion e in a straight line to the stretching-drum S. The other wire y is brought from a reel (not shown) through the hollow shaft e and through the hollow side or guide e2 of the revolving frame or iiier E, and through the opposite hollow trunnion e of said frame, and then to the' stretching-drum with the wire 0c. A gearwheel I on the end of the hollow shaft e', into 7o which the wire y is fed, gears with the wheel I on the counter-shaft I2, carrying a worm o', gearing witha pinion z" on the shaft of the first stretching-drum S. The first stretchingdrum is thus driven from the pulley F, which revolves the flier E. The two wires x y are carried back and forth over the stretchingdrums S S', whose peripheries are provided with grooves, as presently described, and finally the twisted wires pass to a storage-reel. 8o (Not shown.) The wires y having been drawn out through the hollow shaft e and around the stretching-drums S S', power is applied to the pulley F, and the stretchingdrums draw the wires through the machine. The wire is drawn through its guide in the trunnion g straight from the bobbin H, while the wire y, passing through the hollow side or guide e2 of the revolving flier E, is applied or wound spirally around the wire 9c The wires th us twisted pass to the stretchingdrums, the draft of which equalizes the twist and draws sufficient wire from the bobbin H to permit of the equalization of the twist and insure that both strands are of the same length. f As seen in Fig. 3, the peripheries Vof the drums S S are provided with circumferential `irroovesf, which gradually decrease in depth from one end side of the drum to the other. The twisted wires run first into the deepest groove, and then successively in the shallower grooves, beingl thereby sutticiently stretched without being subjected to any sudden strain.

A proper tension may be placed upon thc bobbin H to prevent slack or prevent the wire running ahead of itself by means of a tension-screw 71, working in one side of the frame G, and provided upon its inner end with a felt or leather washer 71.

The details of construction are plain from the drawings, and a more detailed description isthereforeunnecessary. Thefliermaybecast of a single piece of metal or may be composed ot' detachable parts, and in order to balance it one side it solid may be made ot' smaller cross-sections; but I prefer to make both sides hollow and form them of seamless tubing, as shown in Fig. 4.

'lhe flier is preferably peai'-shaped in side elevation, and the bobbin is hungin its frame at the larger end of the ilier, which has sufeient space at this end between its arms to accommodate it. The convergirmr ends of the arms come together gradually and apply the strand with the proper inclination to the core. The flier is similarly shaped on opposite sides, so as to have a perfect balance.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination, substantially as hereinbefore set forth, of a flier having hollow trunnions and a tubular side piece or guide connecting the trunnions, through which a strand is fed, a bobbin-holder around which the flier revolves, and stretching-drums for drawing the strands from the bobbin and the flier and imparting to the twisted strands a uniform length.

2. 'lhe combination, substantially as hereinbefore set forth, of the standards, the pearshaped ilier having tubular side pieces, and hollow trunnions mounted in the standards, the bobbin-holder hun@ loosely within the flier, a die at one end of the I'lier, through which a strand from the bobbin passes, stretching-drums, the upper surface of one ol' which is in the same parallel plane as the die, a driving-pulley for revolving: the flier, and gearing connecting said pulley with the stretching-dmms.

In testimony whereof: I have hereunto subscribed my name.

GEORGE M. BALL.

\Vitnesses:

EDWARD C. DAviosoX, MAME J. KELLEY. 

